Basic electrical lesson

[weedpharma]

Yes I am a pedant but I wish to point out a common error appearing often.

There is no such thing as watts per hour or amps per hour. Both watts and amps are instantaneous values with no time element.

The terms that involve time are amp hours and watt hours. These represent amps times hours and watts times hours.


Weedpharma

 

[JerryK]

I understand binary. Also Ands, Ors, Nands, and Nors. Flipflops, one shots, first in-first out. Mtl and TTL logic...... Used to spend a lot of time paging thru the big yellow Texas Instruments books when the new ones came out. But the memory is fading fast ... [ ]

 

[oldballs]

Yes, we're never too old to learn or re-learn some of the infinity of questions. However, remembering them is a different issue. Now here on TBN, it seems to me that some of these questions can only be answered by God Himself...that is, if you follow some of the lengthy discussions......which I enjoy BTW. ..............now back outdoors to my little world.:dance1:

 

[JRobyn]

A little too Big-endian.....

 

[QRTRHRS]

I understand binary. Also Ands, Ors, Nands, and Nors. Flipflops, one shots, first in-first out. Mtl and TTL logic...... Used to spend a lot of time paging thru the big yellow Texas Instruments books when the new ones came out. But the memory is fading fast ... [ ]

Add to the list, J factors, hexidecimal, bolean algrebra, ugh! Got a degree in electronics in 1982, got on with AT&T Micro doing quality and process control and quickly forgot all of the above.

 

[buckeyefarmer]

There are only 10 types of people that understand binary, those that get it and those that don't.

 

[ericb2400]

I get that :confused2:

There are only 10 types of people that understand binary, those that get it and those that don't.

 

[troutsqueezer]

There are many misconceptions about electricity. For example, many people think it flows at the speed of light when in fact, it only flows several centimeters per minute. AC current doesn't flow at all, it just sits in place and vibrates. It's the energy that flows much faster.

 

[Daver1963]

There are only 10 types of people that understand binary, those that get it and those that don't.

Are you sure there aren't 11
those who get it, those who don't, and those who pretend?

 

[Daver1963]

There are many misconceptions about electricity. For example, many people think it flows at the speed of light when in fact, it only flows several centimeters per minute. AC current doesn't flow at all, it just sits in place and vibrates. It's the energy that flows much faster.

..and if you learned from the Navy its all backwards.

 

[weedpharma]

There are only 10 types of people that understand binary, those that get it and those that don't.

10 in binary system is 2 in decimal system.

 

[dave1949]

I'm guilty of recently using the phrase "7200 watts per hour = 7.2kWh" in a discussion of the operating costs of a clothes dryer.

What I should have said, to be precise, is "a 7200 watt dryer operated for one hour = 7.2kWh", as I was aiming at arriving at the standard billing unit for electricity tied to a unit of operation time that is useful for the reader's comprehension. There is really no such thing as a 7200 watt hour dryer.

It never a bad thing to understand basic concepts, carry on with your pedantry. :thumbsup:

 

[xtn]

Put in the very simplest terms: "Per hour" does not equal "for an hour."

 

[dave1949]

Put in the very simplest terms: "Per hour" does not equal "for an hour."

And your point is???????

 

[CobyRupert]

....then there are many of us who operate with "fuzzy logic".

I'll always remember being a janitor, green Dickies outfit and all, one summer when I was home from college, good money but nobody knew I was an electrical engineer major. One day I'm going around a factory engineering department office, emptying garbage cans, and a guy is drawing logic gate diagrams (and/or/nor's, etc..) on a whiteboard, designing how a machine is suppose to work. So I ask "Hey what's that?" Got the roll of the eyes, and an answer something like: "Well (Mr. Janitor, I doubt you'll understand, but), these diagrams describe...blah, blah blah". To which I reply "Oh, that's neat. Say, have you tried expressing it in Boolean equations and using identities to reduce the number of operations? " You could see the jaws drop and a confused look come over their faces from getting advice from the janitor. Finished the sentence with "Where do you want your garbage can put?" and walked out of the room. Priceless!

 

[xtn]

And your point is???????

Exactly the same as yours. I've been guilty of the same mistake. I was just backing you up.

 

[mikehaugen]

....then there are many of us who operate with "fuzzy logic".

I'll always remember being a janitor, green Dickies outfit and all, one summer when I was home from college, good money but nobody knew I was an electrical engineer major. One day I'm going around a factory engineering department office, emptying garbage cans, and a guy is drawing logic gate diagrams (and/or/nor's, etc..) on a whiteboard, designing how a machine is suppose to work. So I ask "Hey what's that?" Got the roll of the eyes, and an answer something like: "Well (Mr. Janitor, I doubt you'll understand, but), these diagrams describe...blah, blah blah". To which I reply "Oh, that's neat. Say, have you tried expressing it in Boolean equations and using identities to reduce the number of operations? " You could see the jaws drop and a confused look come over their faces from getting advice from the janitor. Finished the sentence with "Where do you want your garbage can put?" and walked out of the room. Priceless!

A beautiful mind?

 

[dave1949]

Exactly the same as yours. I've been guilty of the same mistake. I was just backing you up.

Thank goodness. :laughing:

To be picky, I didn't think my original sentence was all that bad. The discussion was about the electricity cost of operating a clothes dryer.

If I had included the implicit information such as: "[Operating a dryer rated at] 7200 watts per hour [of use] = 7.2kWh." Would I still be guilty?

 

[JerryK]

Geez, must be a slow day..... BRING ON the deep snow to be cleaned off the driveway...!!!!!! [ ]

 

[rsallen]

I have a dryer that has a dial that goes to eleven.
Can I play in this conversation?